On Fri, Apr 3, 2009 at 6:52 AM, Peter Rolf <indiego@gmx.net> wrote:

Curiouslearn schrieb:

Hi,

I want the labels as (0.5,0.55,0.6,0.65,0.7,...,1) or (0.50,0.55,0.60,0.65,0.70,...,1). Either of these two is fine.

I tried the following code for this.

\starttext

\startuseMPgraphic{labeltest}
numeric rmin,rmax;
rmin := 0.5; rmax := 1;
ux := 25cm; uy :=10cm;
% draw axes
draw (rmin,0)*ux -- (rmax+0.1,0)*ux;
draw (rmin,0)*ux -- (rmin*ux,(1.1)*uy);
for x = 0.5 step 0.05 until 1.1:
label.bot(textext(decimal(x)),(x*ux,x*uy));

you accumulate the rounding error with every step of the loop. try to avoid such 'low value' steps if possible.

for x = 10 step 1 until 22: % 0.05*20 to get an integer loop index
tx := x/20; % correct value
label.bot(textext(decimal(tx)),(tx*ux,tx*uy));

Best wishes, Peter

endfor;
\stopuseMPgraphic

\useMPgraphic{labeltest}

\stoptext

I get (0.5,0.55, 0.6,0.65001,0.70001,0.75002,...,1.00003) instead. I don't understand why I get more than 2 digits after 0.6. Is there a way to restrict the number of digits after the decimal point.
Thanks very much.

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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : https://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
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